DL 5684 then B6 861 at Boston
Cleveland → Boston → San Juan
Timetable, Boston time
09:01DL 5684 from Cleveland at the gate
08:40B6 861 to San Juan leaves the gate
23 h 39 apart on the timetable, overnight
B6 861 leaves 23 h 39 after DL 5684 arrives on the timetable: more than half a day, so not a connection we count.